In order to give guests more time to enjoy the park’s rides and attractions, operating hours at Magic Kingdom Park have been extended Saturday, May 27, until midnight.
Since the park was originally scheduled to close at 11 p.m., not all of the offerings will be available to guests. The rides and attractions available during the additional time will be updated for guests in the My Disney Experience app. This change may not be reflected in the Times Guide, but the signs at the entrance of the park will be updated.
Disney Talk Blog 